﻿#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h> //目录名获取配合DIR
#include <assert.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h> //文件控制操作
#include <sys/types.h> //获取pid等
#include <sys/wait.h> //等待子进程结束
#include <time.h> //时间获取
#include <sys/ipc.h> //进程通信
#include <sys/msg.h> //消息队列
#include <sys/shm.h> //共享内存
#include <signal.h> //信号处理
#include <pthread.h> //线程
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "cJSON.h"

struct msg {
    char operator[10];
    int number1;
    int number2;
    int result;
};

int main(int argc, char *argv[])
{
    int temp = 0;
    int sock = 0;
    int ret = 0;
    struct sockaddr_in serAddr;
    memset(&serAddr, 0, sizeof(serAddr));

    sock = socket(AF_INET, SOCK_DGRAM, 0);
    if (sock == -1)
    {
        perror("sock");
        exit(-1);
    }

    serAddr.sin_family = AF_INET;
    serAddr.sin_port = htons(5497);
    serAddr.sin_addr.s_addr = inet_addr("192.168.48.128");
    struct msg k;
    printf("请输入运算符：(加1，减2，乘3，除4)\n");
    scanf("%d", &temp);
    if (temp == 1)
    {
        strcpy(k.operator, "add");
    }
    else if (temp == 2)
    {
        strcpy(k.operator, "sub");
    }
    else if (temp == 3)
    {
        strcpy(k.operator, "mul");
    }
    else if (temp == 4)
    {
        strcpy(k.operator, "div");
    }
    else
    {
        printf("输入有误！\n");
        return 0;
    }
    printf("请输入第一个数：\n");
    scanf("%d", &k.number1);
    printf("请输入第二个数：\n");
    scanf("%d", &k.number2);
    cJSON *json = NULL;
    json = cJSON_CreateObject();
    cJSON_AddStringToObject(json, "operator", k.operator);
    cJSON_AddNumberToObject(json, "number1", k.number1);
    cJSON_AddNumberToObject(json, "number2",k.number2);
    char* dest = NULL;
    dest = cJSON_Print(json);
    printf("发送的字符串是%s\n", dest);
    ret = sendto(sock, dest, strlen(dest), 0, (struct sockaddr *)&serAddr, sizeof(serAddr));
    if (ret == -1)
    {
        perror("sendto");
        exit(-1);
    }
    cJSON_Delete(json);


    //收到的结果
    char buf[1024] = {0};
    memset(buf, 0, sizeof(buf));
    ret = recvfrom(sock, buf,sizeof(buf), 0, NULL, NULL);//发过来的是字符串，注意接受格式！！
    if (ret == -1)
    {
        perror("recvfrom");
        exit(-1);
    }
    printf("收到的结果是：%s\n", buf);
    struct msg res;
    cJSON* json2 = NULL;
    json2 = cJSON_Parse(buf);
    if (json2 == NULL) {
        printf("解析error\n");
    }
    cJSON* num = NULL;
    num = cJSON_GetObjectItem(json2, "result");
    if (num == NULL) {
        printf("读取error\n");
    }
    if (num->type == cJSON_Number) {
        res.result = num->valueint;
        printf("结果为：%d\n", res.result);
    }

    close(sock);
    return 0;
}






